TY - JOUR T1 - On "Light Body" Hydrophones and the Directional Properties of Microphones JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 100 IS - 704 SP - 252 EP - 260 PY - 1921/12/01/ UR - http://dx.doi.org/10.1098/rspa.1921.0085 M3 - doi:10.1098/rspa.1921.0085 AU - Wood, A. AU - Young, F. ER -